The Stadsgewestelijk Materieel or SGM (English - Suburban Equipment or City Regional rolling stock) was an electric multiple unit (EMU) train type that was operated by the Dutch railway company Nederlandse Spoorwegen. They were built from 1975 to 1983 by Talbot and retired from service between 2018 and 2021. Names Stadsgewestelijk Materieel (SGM) Sprinter Plan Y Mat '74/Materieel 1974 General information The SGM was the first train type in the Netherlands to be specified for frequent local train operation, since the Spoorslag '70 timetable introduced the concept of a strict separation of all-stop local trains and skip-stop express trains in order to improve punctuality and speed as well as to attract more passengers to rail. The SGM trains had fast acceleration as distances between stations were short, so they needed to be able to speed up and brake quickly. The original idea was for them to be able to operate through services on the Amsterdam Metro network, so third rail would be needed as well as overhead pick-up, however in 1969 this idea was dropped. NS also did consider importing the Paris RER MS 61 train model from France, which was cheaper (per 3-car MS-61 unit as compared to a 2-car SGM unit) than developing the SGM from scratch, however, it was for various reasons deemed unsuitable for the Dutch rail network. The two-car SGM units could accelerate from in 72 seconds. Each coach has 3 doors on each side, to allow for quick loading and unloading. First generation (SGM-0) The first batch of 15 were delivered between March and November 1975 and were numbered 2001 - 2015. These were delivered at the same time as the last batches of Plan V stock. These are 2 car units. These were to be used on the Zoetermeer Stadslijn and so did not feature first class, a toilet or a gangway between each coach. 2014 and 2015 were built with different electric traction, but their trial was unsuccessful and so the units were stored for many years, until 2000 when they were fitted with Insulated-gate bipolar transistor. Second generation (SGM-1) A total of 60 were ordered in 1977 and started being delivered in September 1978 and finished in 1980. These were numbered 2021 - 2080. These were all delivered as 2 car units. These featured a toilet and a gangway. In 1983 2036 - 2080 were strengthened up to three-car units, with